Hub



Jan. 24, 1928. 1,656,935 w. H. BAHAN HUB Filed ont., s. 192e l d L /f /'i ff ?atented Jan. 24, 1928 UNITED sra'rss mit..

Ncriars..

HUB.

Application filed October 5, 19526. Seriallil'o.`139,739.

llhis invention relates to the structure of gear wheels, pulleys, brake wheels7 flywheels, and other similar elements which are to be secured firmly upon a rotating shaft, and

the object of the invention is to provide a simple, eiiicicnt, inexpensive and easily applied structure whereby the desired rigid connection between the wheel or pulley and the shaft will be obtained and the elfects of wear may be easily overcome. The invention is illustrated in the accompanying drawing and will be hereinafter first fully described and then more particularly/,defined in the appended claims.

ln the drawings:

Figure l is a side elevation of a pulley showing one embodiment of the invention. Figure 2 is a vertical transverse section of the structure shown in Figure l, upon a slightly enlarged scale.

Figures 3 and 4 are views of members of the hub in Figures l and 2.

v Fivure 5 is a view similar to Figure 2, but s owing another embodiment of the invention.

Figure 6 is a similar View showing a third embodiment of the invention. Y In the drawing, Fig. 1 represents a pulley S0 consisting of a rim Q, spokes 3, and a hub member 4, the hub member having a central circular opening therethrough to accommodate the rotating shaft and the securing elements which constitute the essential parts of the present invention. Referring more detail perspective structure shown particularly to Figures l, 2, 3 and 4, the

structure illustrated therein embodies a semicylindrical sleeve or hub member 5 which is adapted to be inserted through the central opening of the hub 4 of the pulley and to fit closely to the rotating shaft. Between its ends this semi-cylindrical body 5 is provided with an external annular fiange or rib 6 which is adapted to fit against the side of the pulley, as shown most clearly in Figure 2, and is provided at intervals with openings 7 therethrough to receive securing bolts 8 whereby it may be attached to the pulley. At one side of the annular flange 6, lugs or ears 9 are formed upon the body 5 to receive fastening bolts, as will be presently more specifically set forth. Mating with the semicylindrical body 5 is a similar semi-cylindrical body l() which is of the same length as the member 5 and is likewise adapted to be inserted through the central opening of the pulley and to fit around the rotating shaft, the body 10. however, being provided in its bore with a longitudinal groove or key seat ll whereby it may be lreyed to the shaft so that it will rotate therewith. Bet-Ween its ends, the body l() is provided with a transverse rib or fin l2 adapted to lit against the outer face of the 4flange 6, as shown most clearly in Figure 2, and is provided withfa radial slot 13 through which one of the se-y curing bolts 8 may pass, the slot 13 providing for radial adjustment of the member l0 so that the proper engagement of the same with the shaft maybe eifected. Between the fin or rib l2 and the nearer end of the body, y

l0, lugs or ears 14 are provided thereon, V`

which mate with the lugs upon the body and through which clamping bolts 15- are inserted to clamp'the two semi-eylindrical` members lirmly to each other. and to the y shaft.

`It will be understood that the mating bodies 5 and 10 together constitute a hub which is clamped about the shaft and firmly secured to the pulley or wheel whereby the rotation of the shaft willbe imparted to the pulley or wheel, and the structure `is especially desirable for prolonging the life of a wheel or pulley which hasbeeninuse for a considerable period of time and which has become worny so that it does not fit"v securely upon the shaft. ln applying the hub structure shown in Figures l to 4, and which has been described, the center opening of the pulley may be bored. out so as to present a true circular surface of sufficient di-- ameter to accommodate the hub members, and bolt holes are then formed through the hub portion of the pulley in proper relation to receive the bolts 8 by which the larger hub member is secured to the pulley.

The smaller member may then be lplaced in proper position through the central portion of the pulley and mate with the larger member' about the shaft and secured by the bolts l5 and one of the bolts 8, as shown and described. By the use of this structure, an old pulley or wheel may be rendered serv iceable for an additional period and at a less cost than would be necessary to supply an entirely new pulley or wheel. In many mechanisms, a gear wheel or pulley does comparatively little work through the greater portion of its rotation while through the remaining port-ion of its rotation the strain thereon is concentrated and, consequently, the Wear is localized and the Wearreceiving portion of the gear Wheel or pulley fails to operate el'liciently. By employing my improved detachable hub, it is possible to shiftA the pulley about the sha-ft so that the strain will be exerted upon a different part of the pulley or gear wheel and, consequently the life of the same prolonged. To e'lect this adjustmenl1 the securing elements or bolts 8 are Withdrawn and the pulley then shifted about the shalt So astoibring the Working tread surface ol the pulley or wheel into a dillerent relation to the hub, whereupon the securin bolts are restored and the hub secured firmly in place as before. lnasmuch as the hub will retain `its original relation to the shaft, this shifting of the wheel or pulley will cause a different part oli its working tread surface to be presented lio the straining point in its rotation.

While the hub is especially adapted to old pulleys or Wheels and is, therefore, prelerably removable as an entirety therefrom, it may beapplied to neu' wheels or pulleys in the manufacture oli the same and in Figures 5 and G, l have shown the hub as comprising the semi-cylindrical member lll forlnedlintegral with the spokes or web 1T of a gear Wheel or pulley, Figure 5 showing a geur wheel and Figure G showing a pulley. The web l in Figures 5 and G corresponds tothe annular flange G oil the first described ormlo the invention but otherwise the hub memberll is the same in all respeets as the hub member 5. The hub member 1S shown in' Figures 5 and G corresponds in all respects to the hub member l() previously described, thev fin or rib 19 thereof fitting against the side of the web 17 and being seeureduthereto by a clamping belt 20 .in an obvious manner. In the form shown in Figure 5, the hub member 1G is Without bolt holescorresponding to the bolt holes shown Ain Figure fl, butin Figure G, such bolt holes are shown inorder that alg-ear Wheel or pinion 21 may be secured to the outer :lace of the web 17. In all forms of the invention, `the two hub members. are secured ,firmly together by bolts inserted through mating lugs on the hub members, the tin or `hub permits the pulley or umu: wheel lo be any desired point in the leugyglll ul the shalt and1 when applioch the geur u'lurl or pulleyv will be rigid `with rer lett to l'lle shall.

Haring thus described l'lle invention, 'what l claim l. il hub stilutli-lufe crnuprieilur maling quickly and rigfidlr seel'lred to a elullt ut .semi-cylirulrieill members adapted lo muurele a shait, means lier rl'iruriug the mema bere together about a shall, au cumulus ou one member between the ends lllereol aud a radial rib on the other member between the ends thereof adallted to be f -ured lo a side of the aunulus.

2. il hub structure eoml'lrisiuuj a seulicylimlrical hub member prin'idlul between its ends with au annular llange uduplod lo be seczured to one side ol an element lo be rotated by a shui said hub lueluber bolug Further prlirided al: one eide ol Amid lluuge with laterally projelirliug a seooud semis cylindrioal hub member 'ilml near one end with lateral y prog. ring huis maling with the lues ou lille lirsl mentioned hub member and being;` further prlu'idenfl with a radial rib bearingl luralnsl; the outer :aide oli the annular l'laugfe ou the lirlal: luoulioued hub member, said rib liu-ring a radial slot formed therelliroueh and lille `lul-nie tioned hub meuilufr beingpr ruled in bore with a lungiliulinal loeyway, llulleliiul! devices inserted, tln'ol'urb said luga to secure the hub munnbei'el lo euell other und ululul'` a. shalt, and other ilasteuinu derirln iu sorted through said annular A luge iulio the element to be rotal;ed,`oue oli said lening' devices being also insor ,f through the radial slot in the rarilially tollicuidilui rib.

ln testimony uhrreo'li l ullbr my simu turen 

